5FN8

Crystal structure of rat CD45 extracellular region, domains d3-d4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Initiation of T Cell Signaling by Cd45 Segregation at 'Close Contacts'.

Chang, V.T.Fernandes, R.A.Ganzinger, K.A.Lee, S.F.Siebold, C.Mccoll, J.Jonsson, P.Palayret, M.Harlos, K.Coles, C.H.Jones, E.Y.Lui, Y.Huang, E.Gilbert, R.J.Klenerman, D.Aricescu, A.R.Davis, S.J.

(2016) Nat Immunol 17: 574

  • DOI: 10.1038/ni.3392
  • Primary Citation of Related Structures:  
    5FMV, 5FN6, 5FN7, 5FN8

  • PubMed Abstract: 
  • It has been proposed that the local segregation of kinases and the tyrosine phosphatase CD45 underpins T cell antigen receptor (TCR) triggering, but how such segregation occurs and whether it can initiate signaling is unclear. Using structural and biophysical analysis, we show that the extracellular region of CD45 is rigid and extends beyond the distance spanned by TCR-ligand complexes, implying that sites of TCR-ligand engagement would sterically exclude CD45 ...

    It has been proposed that the local segregation of kinases and the tyrosine phosphatase CD45 underpins T cell antigen receptor (TCR) triggering, but how such segregation occurs and whether it can initiate signaling is unclear. Using structural and biophysical analysis, we show that the extracellular region of CD45 is rigid and extends beyond the distance spanned by TCR-ligand complexes, implying that sites of TCR-ligand engagement would sterically exclude CD45. We also show that the formation of 'close contacts', new structures characterized by spontaneous CD45 and kinase segregation at the submicron-scale, initiates signaling even when TCR ligands are absent. Our work reveals the structural basis for, and the potent signaling effects of, local CD45 and kinase segregation. TCR ligands have the potential to heighten signaling simply by holding receptors in close contacts.


    Organizational Affiliation

    Radcliffe Department of Medicine and MRC Human Immunology Unit, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RECEPTOR-TYPE TYROSINE-PROTEIN PHOSPHATASE CA, B190Rattus norvegicusMutation(s): 0 
Gene Names: Ptprc
EC: 3.1.3.48
UniProt
Find proteins for P04157 (Rattus norvegicus)
Explore P04157 
Go to UniProtKB:  P04157
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04157
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A],
G [auth B],
H [auth B],
C [auth A],
D [auth A],
E [auth A],
G [auth B],
H [auth B],
I [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
FLC
Query on FLC

Download Ideal Coordinates CCD File 
F [auth A]CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.41α = 90
b = 131.16β = 90
c = 141.31γ = 90
Software Package:
Software NamePurpose
xia2data reduction
xia2data scaling
SHELXDphasing
autoSHARPphasing
BUSTERrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2016-03-30
    Changes: Database references
  • Version 1.2: 2016-04-27
    Changes: Database references, Other, Refinement description
  • Version 1.3: 2016-05-04
    Changes: Database references
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary